Lime Microsystems
Software Defined Radio

LimeNET Micro 2.0 Developer Edition

A highly flexible SDR system based on LimeSDR XTRX and Raspberry Pi CM4

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LimeNET Micro 2.0 DE (Developer Edition) is a modular radio platform that leverages the Raspberry Pi Compute Module 4 (CM4) and LimeSDR XTRX for their respective computing and RF features. It is based around the new LimePSB RPCM, a planar system — a.k.a. "main" — board, which is significantly more versatile than the previous version of LimeNET Micro, which was limited by its support for a less powerful compute module (CM3) and an integrated SISO radio.

LimeNET Micro 2.0 DE is comprised of LimePSB RPCM, Raspberry Pi CM4, and LimeSDR XTRX, which together form a complete baseband + RF solution and is an ideal tool for a wide range of wireless applications.

A deluxe version comes fully loaded with the Amarisoft 5G stack and core, two smartphones, and ten SIM cards, making it a turnkey private 5G network solution.

Alternatively, the LimePSB RPCM board can be populated with your choice of CM4 and mini PCIe card for custom configurations.

Bare LimePSB RPCM without a CM4 or mPCIe card
LimePSB RPCM with installed Raspberry Pi CM4 and LimeSDR XTRX

Features & Specifications

An integrated 2x2 MIMO front end module (FEM) provides higher output power using Qorvo driver amplifiers for a more comprehensive coverage range while keeping the frequency flexibility of the original LimeNET Micro. It also features integrated low noise amplifiers (LNAs) and SPDT switches that provide for both FDD and TDD modes of operation.

LimeNET Micro 2.0 DE is a LimePSB RPCM preinstalled with a Raspberry Pi CM4 and LimeSDR XTRX, all in an actively cooled acrylic enclosure

LimePSB RPCM Top Components

LimePSB RPCM Bottom Components

LimePSB RPCM User Interfaces

LimePSB RPCM Block Diagram

LimePSB RPCM Clock Diagram

LimePSB RPCM Power Diagram

LimePSB RPCM RF Front End Diagram

LimePSB RPCM USB Diagram

Support & Documentation

LimeNET Micro 2.0 Developer Edition is part of Qorvo RF Accelerator

Key Components

QPA9127 · high-linearity gain blocks

SPF5043Z · low-noise amplifier (LNA)
Maximizes performance in a small form factor.

In the Press


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Produced by Lime Microsystems in Guildford, England.

Sold and shipped by Crowd Supply.

LimePSB RPCM

The Lime Planar System Board for Raspberry Pi Compute Modules (LimePSB RPCM) is a carrier board for a single Raspberry Pi Compute Module 4 (CM4) or compatible boards and a single mPCIe card, such as a LimeSDR XTRX or LoRa card. The board includes an RF front end driver, clock network, SMA antenna connectors, power handling, and multiple host and peripheral connectivity options, making it the perfect development platform for CM4-based radio designs. Does NOT include Raspberry Pi CM4, LimeSDR XTRX, enclosure, cabling, antennas, or power supply.

$899 Free Worldwide Shipping

LimeNET Micro 2.0 DE

A LimePSB RPCM carrier board with LimeSDR XTRX and Raspberry Pi CM4 (with 32 GB flash + wireless + 8GB RAM) fully preinstalled in a custom acrylic enclosure with an integrated cooling fan. Does NOT include SMA antennas or power supply.

$1,850 Free Worldwide Shipping

LimeSDR XTRX

From the LimeSDR XTRX project.

Compatible with the mPCIe slot on the LimePSB RPCM carrier board.

$799 Free US Shipping / $18 Worldwide

12 VDC 36 W International Wall Mount AC Adapter

From the Crowd Supply Basics project.

Suitable for powering LimeNET Micro 2.0 DE.

A 12 V, 3 A (36 W) AC adapter with interchangeable plugs provided for the US, EU, AU, UK, plus a CCC-compliant plug - connecting via a 2.1 mm center-positive barrel jack.

$22 $8 US Shipping / $18 Worldwide

Raspberry Pi CM5 (64 GB, Wireless, 8 GB RAM)

From the Raspberry Pi Compute Module 5 project.

Other variants available on the Raspberry Pi Compute Module 5 project.

This CM5108064 variant of the Raspberry Pi Compute Module 5 is a System on Module (SoM) containing an ARM quad-core Cortex-A72 processor, 8 GB RAM, ethernet, 2.4 and 5 GHz 802.11b/g/n/ac Wi-Fi, 64 eMMC storage, and supporting power circuitry.

$95 $8 US Shipping / $18 Worldwide

Raspberry Pi CM5 (64 GB, No Wireless, 8 GB RAM)

From the Raspberry Pi Compute Module 5 project.

Other variants available on the Raspberry Pi Compute Module 5 project.

This CM5008064 variant of the Raspberry Pi Compute Module 5 is a System on Module (SoM) containing an ARM quad-core Cortex-A72 processor, 8 GB RAM, ethernet, 64 eMMC storage, and supporting power circuitry. Does not include wireless.

$90 $8 US Shipping / $18 Worldwide

Raspberry Pi CM4 (32 GB, Wireless, 8 GB RAM)

From the Raspberry Pi Compute Module 4 project.

Other variants available on the Raspberry Pi Compute Module 4 project.

This CM4108032 variant of the Raspberry Pi Compute Module 4 is a System on Module (SoM) containing an ARM quad-core Cortex-A72 processor, 8 GB RAM, ethernet, 2.4 and 5 GHz 802.11b/g/n/ac Wi-Fi, 32 eMMC storage, and supporting power circuitry.

$95 $8 US Shipping / $18 Worldwide

Raspberry Pi CM4 (32 GB, No Wireless, 8 GB RAM)

From the Raspberry Pi Compute Module 4 project.

Other variants available on the Raspberry Pi Compute Module 4 project.

This CM4008032 variant of the Raspberry Pi Compute Module 4 is a System on Module (SoM) containing an ARM quad-core Cortex-A72 processor, 8 GB RAM, ethernet, 32 eMMC storage, and supporting power circuitry. Does not include wireless.

$90 $8 US Shipping / $18 Worldwide

4G/LTE External Antenna

From the Crowd Supply Basics project.

Abracon External Antennas exhibit low return loss characteristics, high gain, and Low Voltage Standing Ratio (VSWR). These external antennas are linearly polarized and come in a low profile package.

$12 $8 US Shipping / $18 Worldwide

Active GPS Antenna

From the Crowd Supply Basics project.

A low-noise active GPS antenna suited for the GPS L1 band. Accepts 3-5V DC and outputs RF via an SMA(m) connector. Optional adhesive mounting.

$11 $8 US Shipping / $18 Worldwide

U.FL-to-U.FL Coaxial RF Cable with Right-Angle Plug Connectors

From the Crowd Supply Basics project.

The following cables are recommended for connecting LimeSDR XTRX to LimePSB RPCM: three 50 mm, one 70 mm, one 150 mm

A single pliable RF coaxial cable with a low-profile, right-angle, plug-type U.FL connector on each end.

$5 $8 US Shipping / $18 Worldwide

About the Team

Lime Microsystems

 ·   ·   ·   · 

Working toward the democratization of wireless communication through an open source ideology.

Ebrahim Bushehri
 ebrahim24
Andrew Back
 9600
Zydrunas (Zack) Tamosevicius
 ztamosevicius
Karolis Kiela
 Karoliskiela
Aleksandr Vasjanov
Dovydas Rusinskas
Tomas Servenikas

See Also

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